7609548448681 has 3 divisors (see below), whose sum is σ = 7609551207223. Its totient is φ = 7609545690140.

The previous prime is 7609548448657. The next prime is 7609548448687. The reversal of 7609548448681 is 1868448459067.

The square root of 7609548448681 is 2758541.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 453816448281 + 7155732000400 = 673659^2 + 2675020^2 .

It is not a de Polignac number, because 7609548448681 - 2¹⁹ = 7609547924393 is a prime.

It is a super-2 number, since 2×7609548448681² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7609548448681.

It is not an unprimeable number, because it can be changed into a prime (7609548448687) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1379271 + ... + 4137811.

Almost surely, 2^{7609548448681} is an apocalyptic number.

7609548448681 is the 2758541-st square number.

7609548448681 is the 1379271-st centered octagonal number.

It is an amenable number.

7609548448681 is a deficient number, since it is larger than the sum of its proper divisors (2758542).

7609548448681 is an frugal number, since it uses more digits than its factorization.

7609548448681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517082 (or 2758541 counting only the distinct ones).

The product of its (nonzero) digits is 371589120, while the sum is 70.

The spelling of 7609548448681 in words is "seven trillion, six hundred nine billion, five hundred forty-eight million, four hundred forty-eight thousand, six hundred eighty-one".